package com.example.text2.controller;

import com.example.text2.pojo.Result;
import com.example.text2.pojo.User;
import com.example.text2.service.UserService;
import com.example.text2.utils.JwtUtil;
import com.example.text2.utils.Md5Util;
import com.example.text2.utils.ThreadLocalUtil;
import jakarta.validation.constraints.Pattern;
import org.hibernate.validator.constraints.URL;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.Map;

@CrossOrigin
@RestController
@RequestMapping("/user")
@Validated
public class UserController {
    @Autowired
    private UserService userService;

    @PostMapping("/register")
    public Result register(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$")String password){
        User u=userService.findByUsername(username);
        if(u==null){
            userService.register(username,password);
            return Result.success();
        }else {
            return Result.error("用户名已被占用");
        }

    }
    @PostMapping("/login")
    public Result<String> login(@Pattern(regexp = "^\\S{5,16}$") String username, @Pattern(regexp = "^\\S{5,16}$")String password){
        User loginUser=userService.findByUsername(username);
        if(loginUser==null){
            return Result.error("用户名错误");
        }
        if(Md5Util.getMD5String(password).equals(loginUser.getPassword())){
            Map<String,Object> claims = new HashMap<>();
            claims.put("id",loginUser.getId());
            claims.put("username",loginUser.getUsername());
            String token=JwtUtil.genToken(claims);
            return Result.success(token);
        }
        return Result.error("密码错误");
    }
    @GetMapping("/userInfo")
    public Result<User> userInfo (@RequestHeader(name="Authorization")String token){
        //Map<String ,Object> map = JwtUtil.parseToken(token);
        //String username = (String) map.get("username");
        Map<String ,Object> map= ThreadLocalUtil.get();
        String username = (String) map.get("username");
        User user =userService.findByUsername(username);
        return  Result.success(user);

    }
    @PutMapping("/update")
    public Result update(@RequestBody @Validated User user){
        userService.update(user);
        return Result.success();
    }
    @PatchMapping("/updateAvatar")
    public Result updateAvatar(@RequestParam @URL String avatarUrl){
        userService.updateAvatar(avatarUrl);
        return Result.success();
    }
    @PatchMapping("/updatePwd")
    public Result updatePassword(@RequestBody Map<String ,String> params){
        String oldPwd=params.get("old_pwd");
        String newPwd=params.get("new_pwd");
        String rePwd=params.get("re_pwd");
        if(!StringUtils.hasLength(oldPwd)||!StringUtils.hasLength(newPwd)||!StringUtils.hasLength(rePwd)){
            return Result.error("缺少必要的参数");
        }
        Map<String,Object> map=ThreadLocalUtil.get();
        String username= (String) map.get("username");
        User loginUser=userService.findByUsername(username);
        if(!loginUser.getPassword().equals(Md5Util.getMD5String(oldPwd))){
            return Result.error("原密码填写不正确");
        }
        if(!rePwd.equals(newPwd)){
            return Result.error("两次填写的密码不一样");
        }
        userService.updatePwd(newPwd);
        return Result.success();
    }
}
